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Numéro de publicationUS5461385 A
Type de publicationOctroi
Numéro de demandeUS 08/236,598
Date de publication24 oct. 1995
Date de dépôt29 avr. 1994
Date de priorité29 avr. 1994
État de paiement des fraisCaduc
Numéro de publication08236598, 236598, US 5461385 A, US 5461385A, US-A-5461385, US5461385 A, US5461385A
InventeursWilliam E. Armstrong
Cessionnaire d'origineHughes Identification Devices, Inc.
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
RF/ID transponder system employing multiple transponders and a sensor switch
US 5461385 A
Résumé
An improved identification system that employs a novel radio frequency (RF) transponder. The RF transponder comprises a plurality of integrated circuit transponder chips, an RF transmit antenna coupled to an RF output of each of the transponder chips, and a sensor coupled to each of the plurality of transponder chips. A sensor switch is coupled between each of the transponder chips and the RF transmit antenna. The plurality of transponder chips may be individually programmed with different information, or identical information except for one bit. A code reader is coupled to an RF receive antenna for processing data transmitted by the transponder. The transponder is used to transfer information to the code reader relating to an item to which the sensor or transponder is coupled and the condition of the sensor switch. Transmission is accomplished by way of an RF communications link using the RF transmit and receive antennas. The transponder and identification system may thus be used with any application requiring sensor switch information and/or multiple sets of data.
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Revendications(3)
What is claimed is:
1. An RF identification system comprising:
a transponder comprising:
a plurality of transponder integrated circuit chips;
a sensor coupled to the plurality of transponder chips;
an RF transmitting antenna coupled to respective RF outputs of the plurality of transponder chips; and
a sensor switch coupled between the antenna and each of the plurality of transponder chips;
an RF receive antenna for receiving transmitted data from the transponder; and
an ID code reader coupled to the RF receive antenna for processing data derived from the transponder.
2. The RF identification system wherein the transponder comprises:
first and second transponder integrated circuit chips; and
a double throw, single pole sensor switch coupled to the first and second transponder integrated circuit chips.
3. An RF identification system comprising:
a transponder comprising:
first and second transponder integrated circuit chips; and
a sensor coupled to the plurality of transponder chips;
an RF transmitting antenna coupled to respective RF outputs of the plurality of transponder chips; and
a double throw, single pole sensor switch coupled between the antenna and the first and second transponder integrated circuit chips;
an RF receive antenna for receiving transmitted data from the transponder; and
an ID code reader coupled to the RF receive antenna for processing data derived from the transponder.
Description
BACKGROUND

The present invention relates generally to identification systems, and more particularly, to an identification system that comprises an RF transponder employing a plurality of transponder chips and a sensor switch for for providing multiple readouts.

The assignee of the present invention manufactures radio frequency (RF) identification systems that include a transponder and a code reader that are coupled by an RF communication link. The transponder comprises a transponder integrated circuit chip whose RF output is coupled to an RF transmit antenna. Data relating to an item is prestored in the transponder chip. The transponder chip is coupled to a sensor that is used to trigger the chip to transmit the stored data. The balance of the identification system includes a code reader that is remotely located from the transponder that is coupled to an RF receive antenna. When the transponder chip is activated, the data is transmitted from the transponder chip to the reader by way of the RF transmit and receive antennas comprising the RF communications link.

Conventional identification systems typically employ a powered sensor coupled to a single transponder chip that is used to process analog information derived from the sensor. The sensor is powered by transponder chip, and is read and interpreted by the transponder chip. This transponder arrangement generates detailed information derived from the sensor, but requires added power and the use of relatively sophisticated and expensive processing techniques in order to read and interpret the sensor data. Furthermore, only one set of data is provided by conventional systems.

Therefore, it is an objective of the present invention to provide for a identification system employing an improved transponder that employs multiple RF transponder chips and sensor switch that provides for transmission of a plurality of distinct sets of data.

SUMMARY OF THE INVENTION

The present invention is an improved identification system that employs a novel radio frequency (RF) transponder. The RF transponder comprises a plurality of integrated circuit transponder chips, and an RF transmit antenna coupled to an RF output of each of the transponder chips. A sensor, such as a pressure sensor, for example, is coupled to each of the plurality of transponder chips. A sensor switch is coupled between each of the transponder chips and the RF transmit antenna. In a preferred embodiment, the transponder comprises two transponder chips coupled through a double throw, single pole sensor switch to the RF transmit antenna. The plurality of transponder chips may be individually programmed with different information, or identical information except for one bit. An RF receive antenna is provided for receiving transmitted data derived from the transponder. A code reader is coupled to the RF receive antenna for processing data received from the transponder.

In operation, the transponder of the present invention transfers information relating to an item to which it or the sensor is coupled and the condition of the sensor switch to the code reader. This is achieved without the need for a custom transponder integrated circuit that performs a multiplicity of functions. Transmission is accomplished by way of an RF communications link using the RF transmit and receive antennas. The present transponder and identification system may thus be used with any application requiring sensor switch information and/or multiple sets of data.

BRIEF DESCRIPTION OF THE DRAWINGS

The various features and advantages of the present invention may be more readily understood with reference to the following detailed description taken in conjunction with the accompanying drawings, and in which the sole figure of the drawing illustrates a transponder system employing an RF transponder in accordance with the principles of the present invention.

DETAILED DESCRIPTION

Referring to the drawing figure, it shows a preferred embodiment of an identification system 10 employing an RF transponder 11 in accordance with the principles of the present invention. The identification system 10 comprises an RF code reader 16 that is coupled to an RF receive antenna 15. The RF transponder 11 comprises a plurality of transponder integrated circuit chips 12. In the preferred embodiment shown in the drawing figure, and for the purposes of illustration, the RF transponder 11 comprises first and second transponder integrated circuit chips 12a, 12b whose respective RF outputs are coupled through a double throw, single pole sensor switch 13 to an RF transmit antenna 14. It is to be understood that the sensor switch 13 may have multiple poles corresponding to the number of transponder integrated circuit chips 12 that are employed in the system 10. The first and second transponder integrated circuit chips 12a, 12b are coupled to a sensor 17, such as a pressure sensor 17, for example.

The operation of the identification system and RF transponder 11 will be described with reference to its use in processing and managing information relating to tires. It is to be understood that the present invention has many other applications, and that the tire application is used for the purposes of illustration only. When the double throw, single pole sensor switch 13 is moved to a first position (position 1), the first transponder integrated circuit chip 12a is made operational and the second transponder integrated circuit chip 12b is disconnected. When the sensor switch 13 is moved to a second position (position 2), the second transponder integrated circuit chip 12b is made operational and the first transponder integrated circuit chip 12a is disconnected. Thus, data stored in the selected transponder chip 12a, 12b is communicated by way of the RF transmit and receive antennas 14, 15 to the RF code reader 16. The RF code reader 16 then reads the information that is stored in the first or second transponder chip 12a, 12b and that is selected based upon the position of the sensor switch 13.

As an example, consider an application wherein the transponder system 10 is used to process information regarding a truck tire 18. The pressure sensor 17 of the transponder 11 is coupled to the tire 18. The pressure sensor is located in the tire 18, and the transponder 11 is located in the tire 18. When the sensor switch 13 is positioned to select the first transponder integrated circuit chip 12a, that chip 12a might send out a code including tire manufacturer plant code, date code, tire size, tire model, a unique ID code, and pressure sensor switch position=pressure OK. When the sensor switch 13 is positioned to select the second transponder integrated circuit chip 12b, that chip 12b might send out tire manufacturer plant code, date code, tire size, tire model, unique ID code, and pressure sensor switch position=low pressure. Whichever chip 12a, 12b is selected, the data store therein including the relevant data regarding the sensor 17 is transmitted by way of the transmit and receive antennas 14, 15 of the communications link to the reader 16. The reader then processes and/or displays or outputs the information that is read out of the selected chip 12a, 12b.

Thus there has been described a new and improved transponder system employing an improved transponder system that employs an RF transponder and sensor switch and a plurality of transponder chips that provide for transmission of distinct sets of data. It is to be understood that the above-described embodiment is merely illustrative of some of the many specific embodiments which represent applications of the principles of the present invention. Clearly, numerous and other arrangements can be readily devised by those skilled in the art without departing from the scope of the invention.

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US5053774 *13 févr. 19911 oct. 1991Texas Instruments Deutschland GmbhTransponder arrangement
US5311185 *31 août 199210 mai 1994Hochstein Peter ASupervised personnel monitoring system
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US5764138 *29 avr. 19949 juin 1998Hid CorporationRF identification system for providing static data and one bit of variable data representative of an external stimulus
US5774022 *29 août 199630 juin 1998Lockheed Martin CorporationDigital clock recovery loop
US5784686 *31 déc. 199621 juil. 1998Lucent Technologies Inc.IQ combiner technology in modulated backscatter system
US5952922 *31 déc. 199614 sept. 1999Lucent Technologies Inc.In-building modulated backscatter system
US5970393 *25 févr. 199719 oct. 1999Omnitek Research & Development Inc.Integrated micro-strip antenna apparatus and a system utilizing the same for wireless communications for sensing and actuation purposes
US5970398 *29 août 199619 oct. 1999Micron Communications, Inc.Radio frequency antenna with current controlled sensitivity
US5977870 *22 déc. 19972 nov. 1999Bridgestone/Firestone, Inc.Method and apparatus for transmitting stored data and engineering conditions of a tire to a remote location
US5982237 *9 janv. 19989 nov. 1999Micron Communications, Inc.Digital clock recovery loop
US6046683 *31 déc. 19964 avr. 2000Lucent Technologies Inc.Modulated backscatter location system
US6100765 *16 sept. 19998 août 2000Micron Technology, Inc.Digital clock recovery loop
US6122494 *13 oct. 199819 sept. 2000Micron Technology, Inc.Radio frequency antenna with current controlled sensitivity
US6130602 *29 août 199610 oct. 2000Micron Technology, Inc.Radio frequency data communications device
US6130623 *31 déc. 199610 oct. 2000Lucent Technologies Inc.Encryption for modulated backscatter systems
US6157230 *14 sept. 19985 déc. 2000Micron Technology, Inc.Method for realizing an improved radio frequency detector for use in a radio frequency identification device, frequency lock loop, timing oscillator, method of constructing a frequency lock loop and method of operating an integrated circuit
US618484131 déc. 19966 févr. 2001Lucent Technologies Inc.Antenna array in an RFID system
US619833222 sept. 19986 mars 2001Micron Technology, Inc.Frequency doubler and method of doubling frequency
US619835714 sept. 19986 mars 2001Micron Technology, Inc.Stage having controlled variable resistance load circuit for use in voltage controlled ring oscillator
US624301231 déc. 19965 juin 2001Lucent Technologies Inc.Inexpensive modulated backscatter reflector
US624918514 sept. 199819 juin 2001Micron Technology, Inc.Method of speeding power-up of an amplifier, and amplifier
US627869814 sept. 199821 août 2001Micron Technology, Inc.Radio frequency data communications device
US62852615 juil. 20004 sept. 2001Micron Technology, Inc.Digital clock recovery loop
US6285295 *14 déc. 19984 sept. 2001Martin S. CasdenPassive remote programmer for induction type RFID readers
US631444022 sept. 19986 nov. 2001Micron Technology, Inc.Pseudo random number generator
US631697528 sept. 199813 nov. 2001Micron Technology, Inc.Radio frequency data communications device
US633763410 sept. 19988 janv. 2002Micron Technology, Inc.Radio frequency data communications device
US63511909 mai 200026 févr. 2002Micron Technology, Inc.Stage having controlled variable resistance load circuit for use in voltage controlled ring oscillator
US636971027 mars 20009 avr. 2002Lucent Technologies Inc.Wireless security system
US638464814 avr. 20007 mai 2002Micron Technology, Inc.Radio frequency data communications device
US639256228 déc. 199821 mai 2002Caterpillar Inc.Fluid particle sensor apparatus and method for transmitting data to a remote receiver
US642096731 janv. 200116 juil. 2002Lear CorporationSystem and method for shared vehicle tire pressure monitoring, remote keyless entry, and vehicle immobilization
US6448903 *25 nov. 199710 sept. 2002The Yokohama Rubber Co., Ltd.Device for detecting internal pressure of air-filled gunwale protector
US645666831 déc. 199624 sept. 2002Lucent Technologies Inc.QPSK modulated backscatter system
US646613129 août 199615 oct. 2002Micron Technology, Inc.Radio frequency data communications device with adjustable receiver sensitivity and method
US646663428 sept. 199815 oct. 2002Micron Technology, Inc.Radio frequency data communications device
US646962116 août 200122 oct. 2002Johnson Controls Technology CompanyTire monitor compatible with multiple data protocols
US648988829 juin 20013 déc. 2002Johnson Controls Technology CompanyUsing signal strength to identify tire position
US649219211 sept. 199810 déc. 2002Micron Technology, Inc.Method of making a Schottky diode in an integrated circuit
US650138211 juin 200131 déc. 2002Timken CompanyBearing with data storage device
US650983721 sept. 200121 janv. 2003Micron Technology, Inc.Radio frequency data communications device with adjustable receiver sensitivity and method
US65744544 avr. 20003 juin 2003Micron Technology, Inc.Radio frequency antenna with current controlled sensitivity
US660042810 sept. 199829 juil. 2003Micron Technology, Inc.Radio frequency data communications device
US661167312 juil. 199926 août 2003Oliver T. BayleyRadio frequency-controlled telecommunication device
US661796325 févr. 20009 sept. 2003Sri InternationalEvent-recording devices with identification codes
US664777311 juil. 200218 nov. 2003Lear CorporationSystem and method for integrated tire pressure monitoring and passive entry
US665023621 juin 200218 nov. 2003Lear CorporationSystem and method for shared vehicle tire pressure monitoring, remote keyless entry, and vehicle immobilization
US666772520 août 200223 déc. 2003The United States Of America As Represented By The Administrator Of The National Aeronautics And Space AdministrationRadio frequency telemetry system for sensors and actuators
US66686365 juin 200230 déc. 2003Lear CorporationSystem and method for tire pressure monitoring including tire location recognition
US669156729 mai 200217 févr. 2004Lear CorporationSystem and method for tire pressure monitoring including automatic tire location recognition
US669352212 oct. 200117 févr. 2004Lear CorporationSystem and method for tire pressure monitoring including automatic tire location recognition
US669687922 nov. 200024 févr. 2004Micron Technology, Inc.Radio frequency data communications device
US671750712 juil. 19996 avr. 2004Interval Research CorporationRadio frequency tags for media access and control
US672128911 févr. 200013 avr. 2004Micron Technology, Inc.Radio frequency data communications device
US672571212 août 200227 avr. 2004Lear CorporationSystem and method for tire pressure monitoring with automatic tire location recognition
US67351832 mai 200011 mai 2004Micron Technology, Inc.Radio frequency data communications device
US677161323 sept. 19983 août 2004Micron Technology, Inc.Radio frequency data communications device
US67746853 avr. 200010 août 2004Micron Technology, Inc.Radio frequency data communications device
US67748658 janv. 200310 août 2004Inside TechnologiesPortable electronic device comprising several contact-free integrated circuits
US67815089 déc. 200224 août 2004Micron Technology IncRadio frequency data communications device with adjustable receiver sensitivity and method
US678819312 août 20027 sept. 2004Lear CorporationSystem and method for tire pressure monitoring providing automatic tire location recognition
US6806808 *26 févr. 199919 oct. 2004Sri InternationalWireless event-recording device with identification codes
US682577311 sept. 199830 nov. 2004Micron Technology, Inc.Radio frequency data communications device
US6828902 *31 août 20017 déc. 2004Soundcraft, Inc.Wireless data input to RFID reader
US682992417 déc. 200214 déc. 2004Lear CorporationTire pressure monitoring system with low frequency initiation approach
US683646814 août 200028 déc. 2004Micron Technology, Inc.Radio frequency data communications device
US683647226 avr. 200228 déc. 2004Micron Technology, Inc.Radio frequency data communications device
US683898518 déc. 20024 janv. 2005Lear CorporationSystem and method for remote tire pressure monitoring with low frequency initiation
US686480312 oct. 20018 mars 2005Lear CorporationSystem and method for tire pressure monitoring using CDMA tire pressure signals
US687626517 déc. 20025 avr. 2005Lear CorporationSystem and method for using a saw based RF transmitter for AM modulated transmission in a TPM
US694112411 févr. 20006 sept. 2005Micron Technology, Inc.Method of speeding power-up of an amplifier, and amplifier
US694751330 mars 200120 sept. 2005Micron Technology, Inc.Radio frequency data communications device
US69831249 juin 20033 janv. 2006Vulcan Patents LlcRadio frequency-controlled telecommunication device
US7006014 *16 oct. 200128 févr. 2006Henty David LComputer system with passive wireless keyboard
US7030736 *3 juin 200418 avr. 2006Brunswick Bowling & Billiards CorporationRadio frequency identification (RFID) pin detection system
US70346603 avr. 200225 avr. 2006Sri InternationalSensor devices for structural health monitoring
US7058362 *27 sept. 19996 juin 2006Polytechnic UniversityIntegrated micro-strip antenna apparatus and a system utilizing the same for wireless communications for sensing and actuation purposes
US707904324 juil. 200318 juil. 2006Micron Technology, Inc.Radio frequency data communications device
US70847699 janv. 20031 août 2006Vue Technology, Inc.Intelligent station using multiple RF antennae and inventory control system and method incorporating same
US7151455 *30 avr. 200419 déc. 2006Kimberly-Clark Worldwide, Inc.Activating a data tag by load or orientation or user control
US715197926 nov. 200219 déc. 2006International Paper CompanySystem and method for tracking inventory
US715441415 nov. 200226 déc. 2006Lear CorporationSystem and method for remote tire pressure monitoring
US7163155 *23 déc. 200316 janv. 2007Interdigital Technology CorporationASIC-embedded switchable antenna arrays
US717086712 avr. 200430 janv. 2007Micron Technology, Inc.Radio frequency data communications device
US725967516 mars 200521 août 2007Newage Industries, Inc.Process equipment tracking system
US72830357 mars 200616 oct. 2007Micron Technology, Inc.Radio frequency data communications device with selectively removable antenna portion and method
US734557528 oct. 200318 mars 2008Micron Technology, Inc.Radio frequency data communications device with adjustable receiver sensitivity and method
US738547729 nov. 200510 juin 2008Keystone Technology Solutions, LlcRadio frequency data communications device
US7481917 *5 mars 200427 janv. 2009HydranauticsFiltration devices with embedded radio frequency identification (RFID) tags
US7576653 *15 mars 200718 août 2009Angel Secure Networks, Inc.Secure panel with remotely controlled embedded devices
US758406112 mars 20071 sept. 2009HydranauticsDevice for measuring permeate flow and permeate conductivity of individual reverse osmosis membrane elements
US758639719 avr. 20078 sept. 2009Vulcan Patents LlcInteractive radio frequency tags
US7642907 *21 déc. 20055 janv. 2010Lear CorporationWireless buckle-up detection using RF technology
US7652575 *27 oct. 200526 janv. 2010Hewlett-Packard Development Company, L.P.Monitoring of packages
US76568583 mars 20062 févr. 2010Sensormatic Electronics, Llc.Apparatus for and method of using an intelligent network and RFID signal router
US773649514 oct. 200815 juin 2010HydranauticsFiltration devices with embedded radio frequency identification (RFID) tags
US77508123 mars 20066 juil. 2010Sensormatic Electronics, Llc.Apparatus for and method of using an intelligent network and RFID signal router
US781272827 août 200712 oct. 2010Round Rock Research, LlcMethods and apparatuses for radio frequency identification (RFID) tags configured to allow antenna trim
US781808819 oct. 200519 oct. 2010Rush Tracking Systems, LlcSystem and method for tracking inventory
US782586726 avr. 20072 nov. 2010Round Rock Research, LlcMethods and systems of changing antenna polarization
US78847241 déc. 20068 févr. 2011Round Rock Research, LlcRadio frequency data communications device with selectively removable antenna portion and method
US788905912 déc. 200815 févr. 2011Interval Licensing LlcRadio frequency-controlled telecommunication device
US7916008 *15 déc. 200529 mars 2011Lear CorporationRFID systems for vehicular applications
US793286718 oct. 201026 avr. 2011Round Rock Research, LlcMethods and systems of changing antenna polarization
US793626831 août 20073 mai 2011Round Rock Research, LlcSelectively coupling to feed points of an antenna system
US794838119 déc. 200624 mai 2011Binforma Group Limited Liability CompanyReversibly deactivating a radio frequency identification data tag
US79862184 janv. 200626 juil. 2011Yasumi Capital, LlcSensor devices for structural health monitoring
US805416321 oct. 20108 nov. 2011Interval Licensing LlcInteractive radio frequency tags
US806388820 févr. 200722 nov. 2011Microsoft CorporationIdentification of devices on touch-sensitive surface
US81156373 juin 200814 févr. 2012Micron Technology, Inc.Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals
US813446729 mai 200713 mars 2012Round Rock Research, LlcAutomated antenna trim for transmitting and receiving semiconductor devices
US8143999 *23 nov. 200627 mars 2012Nxp B.V.Data carrier with sensor
US829597416 sept. 201023 oct. 2012Rush Tracking Systems, LlcSystem and method for tracking inventory
US832130223 janv. 200327 nov. 2012Sensormatic Electronics, LLCInventory management system
US834488522 janv. 20091 janv. 2013Angel Secure Networks Inc.Container with interior enclosure of composite material having embedded security element
US8395487 *16 mars 201212 mars 2013Nxp B.V.Data carrier with sensor
US8401777 *7 mai 200719 mars 2013Morgan RymanSystem for wireless transmission of measurement results intented to be used in a coupling device and a use of the system in a vehicle
US840550921 nov. 201126 mars 2013Micron Technology, Inc.Systems and methods to selectively connect antennas to receive and backscatter radio frequency signals
US848776919 avr. 201116 juil. 2013Binforma Group Limited Liability CompanyReversibly deactivating a radio frequency identification data tag
US86173977 sept. 200631 déc. 2013HydranauticsReverse osmosis filtration devices with RFID tag-powered flow and conductivity meters
US86247112 janv. 20087 janv. 2014Round Rock Research, LlcRadio frequency identification device operating methods, radio frequency identification device configuration methods, and radio frequency identification devices
US20080316000 *23 nov. 200625 déc. 2008Nxp B.V.Data Carrier with Sensor
US20090309706 *10 juin 200917 déc. 2009Somnath MukherjeeRadio frequency identification system with improved accuracy and detection efficiency in presence of clutter
US20110221575 *10 mars 201015 sept. 2011Apple Inc.Rfid circuitry and methods of using the same to provide information of events pertaining to an electronic device
US20110285534 *4 mai 201124 nov. 2011Lsis Co., Ltd.Remote control apparatus using rfid and method thereof
US20120176228 *16 mars 201212 juil. 2012Achim HilgersData carrier with sensor
CN1639913B9 janv. 200326 mai 2010Vue科技公司Intelligent station using multiple RF antennae and inventory control system and method incorporating same
DE10336321A1 *5 août 20033 mars 2005Deutsche Telekom AgSensitives Smart-Label
EP1743282A1 *19 janv. 200517 janv. 2007Kimberly-Clark Worldwide, Inc.Activating a data tag by load or orientation or user control
WO2000036849A1 *10 déc. 199922 juin 2000Martin S CasdenPassive remote programmer for induction type rfid readers
WO2000050849A1 *25 févr. 200031 août 2000Stanford Res Inst IntEvent-recording device having an identification code
WO2002011061A1 *5 juil. 20017 févr. 2002Inside TechnologiesPortable electronic device comprising several contact-free integrated circuits
WO2002073523A1 *12 mars 200219 sept. 2002William Hendrik HofmeyrTelemetry
WO2003021974A1 *31 juil. 200213 mars 2003Soundcraft IncWireless data input to rfid reader
WO2003061060A2 *9 janv. 200324 juil. 2003Westvaco CorpIntelligent station using multiple rf antennae and inventory control system and method incorporating same
WO2003061366A2 *23 janv. 200331 juil. 2003Meadwestvaco CorpInventory management system
WO2003085360A1 *26 mars 200316 oct. 2003Stanford Res Inst IntSensor devices for structural health monitoring
WO2007106584A2 *15 mars 200720 sept. 2007Angel Secure Networks IncSecure panel with remotely controlled embedded devices
WO2009034534A2 *11 sept. 200819 mars 2009Univ RomaMultiple-port rfid device, method of manufacturing and using thereof
Classifications
Classification aux États-Unis342/42, 340/447, 342/44, 340/10.41, 342/50
Classification internationaleG06K19/07, G01S13/76, G08C17/02
Classification coopérativeG06K19/0723, G08C17/02, G06K19/0717, G01S13/765, G06K19/07764
Classification européenneG06K19/077T3E, G06K19/07E2, G06K19/07T, G08C17/02, G01S13/76D
Événements juridiques
DateCodeÉvénementDescription
4 déc. 2007ASAssignment
Owner name: ASSA ABLOY AB, SWEDEN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ASSA ABLOY IDENTIFICATION TECHNOLOGY GROUP AB;REEL/FRAME:020196/0110
Effective date: 20071122
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ASSA ABLOY IDENTIFICATION TECHNOLOGY GROUP AB;REEL/FRAME:20196/110
Owner name: ASSA ABLOY AB,SWEDEN
18 mai 2007ASAssignment
Owner name: ASSA ABLOY IDENTIFICATION TECHNOLOGY GROUP AB, SWE
Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:HID GLOBAL CORPORATION;REEL/FRAME:019317/0014
Effective date: 20070409
Owner name: HID GLOBAL CORPORATION, CALIFORNIA
Free format text: CHANGE OF NAME;ASSIGNOR:HID CORPORATION;REEL/FRAME:019317/0010
Effective date: 20060501
23 déc. 2003FPExpired due to failure to pay maintenance fee
Effective date: 20031024
24 oct. 2003LAPSLapse for failure to pay maintenance fees
3 avr. 2001ASAssignment
Owner name: HID CORPORATION, CALIFORNIA
Free format text: TERMINATION OF SECURITY AGREEMENT;ASSIGNOR:CHASE MANHATTAN BANK, THE AS AGENT, A BANKING CORPORATION OF NEW YORK;REEL/FRAME:011692/0667
Effective date: 20010103
Owner name: HID CORPORATION 9292 JERONIMO ROAD IRVINE CALIFORN
Owner name: HID CORPORATION 9292 JERONIMO ROADIRVINE, CALIFORN
Free format text: TERMINATION OF SECURITY AGREEMENT;ASSIGNOR:CHASE MANHATTAN BANK, THE AS AGENT, A BANKING CORPORATION OF NEW YORK /AR;REEL/FRAME:011692/0667
22 oct. 1999FPAYFee payment
Year of fee payment: 4
22 oct. 1999SULPSurcharge for late payment
13 oct. 1999ASAssignment
Owner name: CHASE MANHATTAN BANK, THE, AS AGENT, NEW YORK
Free format text: SECURITY AGREEMENT;ASSIGNOR:HID CORPORATION;REEL/FRAME:010299/0473
Effective date: 19990914
Owner name: CHASE MANHATTAN BANK, THE, AS AGENT 600 FIFTH AVEN
18 mai 1999REMIMaintenance fee reminder mailed
6 mars 1998ASAssignment
Owner name: HID CORPORATION, CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PALOMAR TECHNOLOGIES CORPORATION;REEL/FRAME:009027/0124
Effective date: 19980219
6 mars 1997ASAssignment
Owner name: PALOMAR TECHNOLOGIES CORPORATION, CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HID CORPORATION;REEL/FRAME:008461/0077
Effective date: 19951207
27 mars 1996ASAssignment
Owner name: HID CORPORATION, CALIFORNIA
Free format text: CHANGE OF NAME;ASSIGNOR:HUGHES IDENTIFICATION DEVICES, INC.;REEL/FRAME:008133/0482
Effective date: 19951016
Owner name: PALOMAR TECHNOLOGIES CORPORATION, CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HID CORPORATION;REEL/FRAME:008186/0289
Effective date: 19951207
4 janv. 1996ASAssignment
Owner name: CHEMICAL BANK, AS AGENT, NEW YORK
Free format text: ASSIGNMENT FOR SECURITY;ASSIGNOR:PALOMAR TECHNOLOGIES CORPORATION;REEL/FRAME:007603/0481
Effective date: 19951006
14 oct. 1994ASAssignment
Owner name: HUGHES IDENTIFICATION DEVICES, INC., CALIFORNIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ARMSTRONG, WILLIAM E.;REEL/FRAME:007245/0749
Effective date: 19941010